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SIGGRAPH
1999
ACM
15 years 2 months ago
Diffraction Shaders
The reflection of light from surfaces is a fundamental problem in computer graphics. Although many reflection models have been proposed, few take into account the wave nature of...
Jos Stam
FOCS
1998
IEEE
15 years 2 months ago
Quantum Lower Bounds by Polynomials
We examine the number T of queries that a quantum network requires to compute several Boolean functions on f0;1gN in the black-box model. We show that, in the blackbox model, the ...
Robert Beals, Harry Buhrman, Richard Cleve, Michel...
SOFSEM
1998
Springer
15 years 2 months ago
Some Results on the Modelling of Spatial Data
Abstract. Formal methods based on the mathematical theory of partially ordered sets (i.e., posets) have been used in the database field for the modelling of spatial data since many...
Luca Forlizzi, Enrico Nardelli
VVS
1996
IEEE
202views Visualization» more  VVS 1996»
15 years 2 months ago
Direct Volume Rendering with Shading via Three-Dimensional Textures
A new and easy-to-implement method for direct volume rendering that uses 3D texture maps for acceleration, and incorporates directional lighting, is described. The implementation,...
Allen Van Gelder, Kwansik Kim
ICFEM
1997
Springer
15 years 2 months ago
Development and Application of a Formal Agent Framework
Previous work has addressed the development of a framework to categorise and understand agent-based systems. It described and formalised an agent-hierarchy that included objects, ...
Mark d'Inverno, Michael Luck